Device for opening preserve tins with a wire



Aug. 25; 1931. BERTQUT 1,820,594

DEVICE FOR OPENING PRESERVE TINS WITH A WIRE Files! Ailg. 23, 1928 lNveur g WW WM;

r Patented Aug. 25, 1931 UNITED STATES PATENT OFFICE GABRIEL IBERTOUT, OF BOIS-COLOMBES, FRANCE DEVICE FOR OPENING PRESERVE TINS WITH A WIRE Application filed August 23, 1928, Serial No; 201,599, and in France August 26, 1927.

This invention relates to a new device for opening preserve tins with a wire.

This device is diagrammatically illustrated by way of example, in the accompanying drawings, in which:

Fig. 1 shows in vertical section a tin provided with a cover constituting one of the bottoms before closure by beading.

Fig. 2 shows the same tin finished.

Fig. 8 is a perspective view of the whole of the tin of Fig. 1, a portion of the edge of the lid being removed to show the position of the opening wire. I

Fig. 4 is a sectional view of the tin made according to line ww of Fig. 3showing the recess reserved on the tin for the ends of the opening wire.

This new device consists in locating the opening wire D, in a groove G hollowed out go in the body of the tin A during its manufacture and adjacent to the top edge of the tin which latter is to be beaded with the rim of the lid B, as shown in Fig. 1 of the accompanying drawings, and in such a manner that, upon beading, the bead entirely covers and hides the wire D and the groove G in which it is located (Fig. 2) without the wire and groove being subjected to any distortion, the wire not being rolled the bead,

but simply hidden by it..

The ends H of the wire, bent at their unction, emerge freely from under the beading (Figs. 3 and 4.) for serving to open the tin,

by winding one of them on an ordinary key for opening tins, pierced for that purpose.

In order to effect the opening of a tin by means of this device, one of the free ends H o f the wire (preferably the left one when the tin is held in front of theperson) is introduced in the hole of the key which is turned in order to wind the wire in spirals on the stem. At the point of contact with the beaded edge, the bead is cut by the wire and winds itself with the wire on the stem of the'key. At the end of its journey all of the bead is detached and the lid comes off by itself,.without distortion either of the lid or of the tin.

flanged edge of the tin and the lid for ensuring fluid-tightness.

The ends H of the wire will be preferably located in a recess I formed on the body of the tin. I

On the body of the tin an indented portion or groove G can be formed, which is adapted to receive a ring or segment F. (Figs.

1 and 2) both serving to counteract the pressure of the knurling tools of the beading machine by increasing the rigidity of the tin. d

This device does not change in any way the system of closure by beading universally practised,whirh thus maintains all its qual- 5 ities of fluid-tightness,strength and sterilization.

On the other hand, theindustrial application of this device does not involve any modification in the machines, nor in the actual processes of manufacture.

Claims:

1. Means for opening preserve tins comprising a wire which is located on the outside of the tin in a groove indented towards the interior of the tin, the top edge of the tin projecting outwardly and forming a bead with the rim of the lid that covers the said groove and wire when in the closed position in order to form a sealed joint.

2. Means for opening preserve tins as claimed in claim 1, in combination with a second groove indented towards the interior of the tin and a ring placed within the tin and bearing upon the second groove, both increasing the rigidity of the body of the tin againstthe pressure of the knurling tools of the heading machine. i

3. Means for opening preserve tins as claimed in claim 1. in combination with a 90 second groove indented towards the interior of the tin, a ring placed within the tin and vbearing upon the second groove and a key 1 upon which is adapted to be wound, one of the free ends of the wire projecting from the 5 edge formed bythe beading whereby the wire will cut and completely detach the edge during the winding.

In testimony whereof I have signed my name to this specification.

GABRIEL BERTOUT. 

